Yup hyperPad is an iPad only app (thats were the PAD comes from ;) )
That being said, Apple is working on something that makes it easier for ios devs to port their apps to mac. So once these tools become available, we'll look into whats needed and maybe hyperPad will also be available for mac.
@angilina009 the new iPad mini that Apple just released is very powerful and a great way to run hyperPad ;)